Timber supporting and positioning device



` Feb. 25,-1941. F. A. NICHOLSON TIMBER SUPPORTING AND APOSITIONING DEVICE Filed April 25, 193B 9 Sheets-Sheet l ATTORN EY Feb. 25? 1941.

F. A. NICHOLSON v TIMBER SUPPORTINGiAND POSITIONING DEVICE Filed April 25, 1938 Vader/d 9 Sheebvs-Shee?I 2 INVENTOR E /cbolson l TToRNEY Fell 25, 1941- F. A. NlcHoLsoN 2,233,219

TIMBER SUPPORTING AND POSITIONING DEVIGEV Filed April 25. 1938 9 Sheets-Sheet '3 IN VEN TOR.

lBY A ATTORNEY Feb. 25, 1941. F. A. NlcHoLsoN TIMBER SUPPORTING AND POSITIONING DEVICE 9 Sheets-Sheet 4 Filed April 25, 1938 INVENTOR eawz'k/I//Ma/.sa/z m BY m ATTORNEY v Feb. 25, 1941. F. A.` NICHOLSON 2,233,219

TIMBER SUPPORTING AND POSITIONING DEVICE Filled April 25, 193e 9 sheets-sheet s 96 /26 /4 ,27 g5 l as q @p /32 I #L v 1 13230' qwtxi ,33 il l INVENTOR na A a Y fa n; iAonmxf 9 Sheefs-Sheet 6 Feb 25, 1941 F. A. NlcHoLsoN TIMBER SUPPORTING AND POSITIONING DEVIGE Filed April 25. 195s Feb. 25, 1941. F. A, NICHOLSON 2,233,219

TIMBER SUPPORTING AND POSITIONING DEVICE Filed April 25, 1938 9 Sheets-Sheet 7 INVENTOR ATTORNEY Feb. 25., 1941.

TIMBER FIA. NlcHoLsoN 2,233,219

SUPPORTING AND POSITIONING DEVICE Filed April 25, 1938 9 sheets-sheet a ATTORNEY Feb. 25, 1941. A NlCHOLsON v 2,233,219

TIMBER SUPPORTING AND POSITIONING DEVICE Filed April 25, 1938 9 Sheets-Sheet 9 25s' I l X fi Z 303\ aos 255 254- 25e 264 #-x x Za v 265 z Z 265 267, J 267 N 232 2W' su) i, 291 2721293 289 3x2 305 sc s soa) (252 l .An/272 sus z3 235 zas' 'z zsa 12581 X x o1 x l 2314' xi X X250' Q `,gas 234 w jjj, ql k/238 533;@2 V* M 254 ac '242/ 24124924" 5 ,1304 24o'24s'24f l 51a' 25s' *5d-Y x 294 l 245 295 1m 4/ 244' 69 INVENTOR l f v" ToRNEY Patented Feb. 25, 1941 yUNITED STATES PATENT oFFlcs 2,233,219 TIMBER SUPPORTING AND POLSITIONING l DEVICE Frederick A. Nicholson, Seattle, Wash., assigner' to Stetson-Ross Machine Company, Seattle, Wash., a corporation of Washington Application April 25, 1938, Serial No. 204,071 11 Claims. (Cl. 1114-242) This invention relates to supporting and posi- Fig. 4 is an elevation of a. rotary tool which iS tioning devices for pieces of timber and the priadapted for use in connection with this turning mary object of this invention is to provide reliable machine for removingknots, and undesirable porand eicient devices for supporting and longitions or for hogging off bark from pieces of wood 5 tudinally and rotatively moving a slab, a log, a held in this machine; .5 cant or a similar piece of timber which is being Fig. 5 is a detached view of a barking head worked on. which `may vbe used on the tool shown in Fig. 4;

In preparing wood for use in the manufacture Fig. 6 is a simplified Wiring diagramshowing a of pulp it is desirable to remove bark, knots, and control means for the motors shown in Figs. 1, 2 i undesirable portions from the slabs or logs or and 3;

cants from which the pulp is to be made. This Fig. 7 is a plan View of a modified form 'of work is best done by the use of driven tools which turning `and feeding machine constructed in acbore out or rout out or cut away the undesirable cordance with this invention, showing a boring parts. To attain speed of operation and properly and routing tool in connection therewith;

l present the pieces of wood to the tools it is de- Fig. 8 is a side elevation of the device shown in i sirable to support these pieces of wood in such Fig. 7, the shield |38 not being shown in the a manner that they may be moved longitudinally interest of clearness;

in either direction and may be turned or rota- Fig. 9 is an end elevation of the device shown tively moved into any desired position relative in Figs. 7 and 8, the shield |38 not being shown to the tool. This invention provides means for in the interest of clearness;

supporting the pieces of wood and `moving them Fig. 10 is a sectional view, on a larger scale, rotatively and longitudinally relative to a tool substantially on broken line 'l0-lll of Fig. 7, in such a manner that high speed operation may parts being shown in elevation, `the shield |38 be obtained and the work done very efficiently. not being shown in the interest of clearness;

A primary object of this inventiony is to provide Fig. 11 is a fragmentary sectional view, with supporting and positioning devices for pieces ci parts in elevation, taken substantially on vbroken timber embodying a plurality of axially aligned line of Fig. 10; spaced apart ring members carrying timber hold- Fig. l2 is a sectional View on a larger scale ing and feeding means and having devices conthan Fig. 7, taken substantially on broken line nected therewith for rotatively moving said ring |2-l2 oi Fig. 7;

members to thereby angularly position the piece Fig. 13 is a fragmentary view illustratingalterof timber carried by the holding and feeding native means for supplying electrical energy to means. the motors shown in Figs. 7 to 12 and 14..

Another primary object of the invention is to Fig. 14 is a simplified wiring diagram showing provide efcient driving and control means for the control means lfor the motors embodied in the timber holding and positioning means where- Figs. 7 to 13; by a piece oi timber may be moved longitudinally Fig. l5 is a view partly in side elevation and and rotatively at the same time, either while it is partly in vertical section of another modified form being worked on by a tool or to position it for of the invention which is adapted for use in The above mentioned general objects of this ing pieces of timber of substantially cylindrical invention, together with others inherent in the shape;

same, are attained by the mechanism illustrated Fig. 16 isa sectional view substantially on broin the following drawings, the same being preken line y|||| of Fig. 15;

ierred exemplary forms of embodiment of this Fig. 17 is a view partly in plan and partly in invention, throughout which drawings like refhorizontal section of the machine shown in Figs. erence numerals indicate like parts: 15 and 16, said Fig. 17 vbeing'on a Smaller scale Figure 1 is a plan View of a turning and feeding than Figs. 15 and 16; machine constructed in accordance with this in- Fig. 18 is a plan view showing a bark removing vention, showing a boring 'tool in connection tool applied to the machine shown in Figs. 15-17; therewith; y Fig. 19 is a view'partlyin elevation and partly Fig. 2 is a view partly in side elevation and in .section taken substantially on broken line partly in vertical section of the same; IB-IS of Fig. 18; and

Fig. 3 is an end elevation of the machine shown Fig. 2011s a wiring fdia'gramsh'owing the control in Figs. 1 and 2, vthe boring tool being omitted; for themotors shown in Figs. 15-19.

application of the tool thereto. holding and angularly and longitudinally mov- Figs. 1, 2 and 3 disclose one form of the invention. In these figures the numerals I5 and I6 indicate generally two circular frame members provided with base portions I1 resting upon and secured to any suitable support I8. The two circular frame members I5 and I 6 are of substantially duplicate construction and the mechanism associated with these two frame members is of substantially duplicate construction. For this reason the same reference numerals and description apply equally well in connection with either of said frame members.

Each frame member I5 and I6 supports three grooved rollers I9, 26 and 2 I, which are rotatably mounted on suitable bearing means 22 and preferably positioned substantially as shown in Fig. 3. Each set of rollers I9, 20 and 2|, receives and supports a circular track 23 on the outer'circumferential portion of a ring member24. .This supports each ring member 24 for rotary movement in either direction within the frame I5 Each ring member 24 is externally provided with an integral gearwheel 25. Each gearwheel 25 meshes with a pinion 26 on a shaft 21, which is common to the two frames I5 and I6. The two gearwheels 25 are preferably of the same size and the two pinions 26 are preferably of the same size so that the two ring members 24 will always be angularly moved equal amounts by `rotation of the shaft 21. The shaft 21 is driven by a reversible motor 28, having a shaft 29 provided with a worm 30, which meshes with a worm wheel 3I on theshaft 21. I

The mechanism used in connection with each ring member 24 for receiving and holding, and longitudinally moving slabs or pieces of wood 32, which are to be worked on, comprises two lower rolls 33, having peripheral spikes or ridges 34 thereon, and two upper rolls 44. Each lower roll 33 is journaled in bearing means 35, provided in the corresponding ring member 24 and each roll 33 is provided with a worm wheel 36, which meshes with a worm 31 on a shaft 38. Each shaft 38 has a driving connection by means of a worm wheel 39 and worm 40 with the shaft 4I of a reversible motor 42. Each motor 42 is mounted on a bracket 43, which is secured to the corresponding ring member 24. The two upper rolls 44 are positioned above the lower rolls 33. The upper rolls 44 are journaled in bearing blocks 45, which are movable vertically in guides 46. Springs 41, Fig. 3, rest upon brackets 48, which extend downwardly from the bearing blocks 45, and exert a resilient downward pressure on the bearing blocks 45, thus keeping the rolls 44.pressed firmly against any slab A32 of Wood which is supported between the rolls 33 and I 44. Rods 49 are connected with the ring members 24, and cooperate in supporting the springs 41.

In this description the rolls 33 and 44 have been referred to respectivelyv as lower rolls and upper rolls. Such description refers to positions as shown in the drawings. It will be understood, however, that rotation of the ring members 24 may turn the rolls and other parts connected with the ring members into any angular position throughout a complete circle.

i Any desired form of tool or machine may be used to bore out, rout out, hog oif, or otherwise operate onthe slab of wood 32, held by the rolls 33 and 44. In Figs. 1 and 2 there is shown one such machine Vcomprising a boring or routing `tool 50, driven by a motor 5I, supported on pivotally connected bracket arms 52 and I53. The bracket arms 52 and 53 are connected with a frame means 54, by suitable mechanism, not herein described in detail, which permits them to be moved vertically to feed the tools 5U to the work. The two arms 52 and 53 permit the tool to be moved crosswise and lengthwise of the slab 32 into substantially any desired position within the limits of movement permitted by said arms 52 and 53. 'Ihe tool 50 is especially well adapted for boring out knots and other undesirable parts of the wood.

In Figs. 4 and 5, there is shown another type of machine, for cutting away wood or bark, which may be used in connection with this turning and feeding device. This machine is located for operation on the slab of wood 32 between the two ring members I5 and I6. 'Ihis machine may supplant or work in conjunction with the tool or machine -54 shown in Figs. 1 and 2 and above described. This machine consists of an upright frame 55, having a vertically movable carriage 56, supported thereon by guide means 51. A horizontally movable carriage 58 is supported in the vertically movable carriage 56 by guide means 59. A motor 60, having a horizon,-`

tal `shaft 6I is carried by the horizontally movable carriage 58. Any suitable tool of cutter head type may be carried by the motor shaft 6I, as for instance the narrow cutter tool 62, shown on said shaft 6I in Fig. 4, or a Wider barker head type tool 63, shown detached in Fig. 5. The tool 62 may be used to form grooves to remove undesirable portions in a slab 32, where a groove or a narrow cut is required to remove the undesirable part. The tool 63 is useful to remove bark or surface defects from the rounded side of a slab 32 of wood. Preferably a hydraulic cylinder 64, having a piston 65 therein connected by a rod 66 with the horizontally movable carriage 58, is provided for moving the horizontal carriage 58 and a similar cylinder 61, provided with a piston 68 connected by a rod 69 with the vertically movable carriage 56, is provided for vertically moving the carriages 56 and 58. Suitable means, not shown, by which the operator may control the inlet and exhaust of fluid from the cylinders 64 and 61 is provided.

In the use of this machine, preferably an operator is positioned at the side of the machine oppositethe tool which is used for cutting away or removing the wood. Positioned within easy reach'of this operator areY tWo reversing switches 1I and 12, shown diagrammatically in Fig. 6. The reversing switch 1I is connected in the circuit of the motor 28 and the reversing yswitch 12 is connected in the circuit with the two motors 42. The two motors 42 operate at the same speed and are connected in parallel, so that they will always start, stop andreverse simultaneously.v

In the` operation of the device, the operator starts the motors 42,so as to drive the rolls 33 in a desired direction, and a slab 32 is fed between the rolls 33 and 44 at one end of the machine. As soon as the end of this slab is within range of the cutting tool, it may be worked on to remove undesirable portions of the wood. The slab is positioned longitudinally by the motors 42, which drive the rolls 33, and is positioned angularly by the motor 28, which drives the shaft 21 and rotates the ring members 24 in either direction as desired. When "the ring members 24- are lrotated, the slab' is "turned on its longi# tudnal axis so that any side or face of the same may be properly positioned to be worked on by the tool. After a slab has been entered between the rolls 33 and 44, at one end of the machine and advanced far enough, it will pass between the rolls 33 and 44 at the other end of the machine and will be supported between both sets of rolls until the trailing end of said slab passes beyond the first set of rolls, after which the slab is held by the second set of rolls, While a trailing end portion thereof is being worked on. The two lower rolls 33 of each set and the two upper rolls 44 of each set are longitudinally spaced apart far enough so that the rolls at one end of the machine will support a slab firmly while the end portions of said slab are being worked on.

In Figs. '1 to 14, inclusive, there is shown a modified form of the invention adapted for holding and angularly positioning and longitudinally moving a relatively long slab or piece of wood. This device comprises six spaced apart circular frame members 12, 13, 14, 15, 16 and 11, mounted on two longitudinally extending parallel base members 18. Each frame member 12 to 11 inclusive, has a circular'ring member 19 (see Fig. 1l) rotatively mounted therein. These ring members 19 are supported on rollers 80 (Figs. l and 12) which are engaged by an external circular track 8| on the ring members.

An external gear 82 is integral or rigidly ccnnected with each ring member 19. A shaft 83, which may extend the full length of the machine, is provided for driving the ring members 19 and suitable spur gears 84, on this shaft 83, mesh with the respective gear wheels 82. The shaft 83 is driven by a motor 85, having a driving connection with said shaft 83, through worm and worm wheel devices 86, or an equivalent driving means, see Figs. '7 and 8.

Each ring member is internally provided in its lower portion, as shown in Figs. 10, 11 and 12, With bearing bracket means 81, in which a shaft 88 is mounted for oscillation. A lower roll 89 is rotatably mounted on each shaft 88. Each roll 89 is fixedly connected, as by a key 90, Fig. 12, with the hub portion of a worm wheel 9|. Each worm wheel 9! meshes with a worm 92, by which the worm wheel 9| and roll 89 are driven. The worms 92, which are associated with the three circular frames 12, 13 and 14 at one end of the machine, are mounted on a shaft 93, Figs..7 and l0, and the corresponding worms which are associated with the three circular fram-es 15, 16 and 11, at the other end of the machine, are mounted on a similar shaft 94, see Fig. 7. The space between the two medial circular frames 14 and 15 is used as an operating station and, as the ring members 19, and parts connected therewith, including the shafts 93 and 94, must be angularly moved through an angle of 180 or more, to properly present the work to a boring or routing or bark removing tool, it is desirable to avoid extending, across this operating station, any shafts or other parts which might collide with, or interfere with, .the operation of the tools. For this reason, the two shafts 93 and 94 are used instead of using one shaft. Two motors 95 and 90 are provided for driving the shafts 93 and 94 respectively. Each motor '95 and 96 is preferably connected with its respective shaft by a link belt 91, operatively connecting a small sprocket wheel 98 on the motor shaft 99 with a larger sprocket wheel |00 on the shaft 93 or 94. This driving connection between the shaft 99 of motor 95 and the shaft 94 .is shown by dottedlines in` Fig. 12, and is somewhat diagrammatically shown by dotted lines in Fig. '1. The control means vfor motors 95 and 96, hereinafter explained, is suchas to always `insure the driving of the shafts 93 and 94 so as to Arotate the rolls 89`in the same direction and at the sar'ne speed,

An upper roll |0| is also carried by each ringr member 1,9, in .a position substantially opposite the'corresponding lower roll 89. The upper rolls |0| are preferably of the concave type, being of larger diameter at the ends and smaller diameter midway between the ends so as to better nt the rounded side of a slab cut from the exterior of a cylindrical log. The upper rolls are each rotatably mounted in a U shaped bracket |02, which is provided with outwardly projecting pivotstuds |03, supported for oscillation in bearings |'04 in the ring member 19, with which the bracket is associated.

Each arm of each bracket |02 has a secondary bracket arm (Fig. 11) pivotally connected therewith by pivot means |06. The lpivot means |06. is positioned at the end of the bracket arm |02, opposite the upper roll |0|, and the secondary bracket arm |05 extends toward the roll |0I, underneath the bracket arm |02. Each second"- ary bracket arm |05 is further connected with its corresponding main bracket arm |02 by resilient means consisting of an eye bolt member |01, connected by pivot means |08 with the main bracket arm |02, and extending in a generally downward direction through a hole |09' in arm |05 and through a rocker member |09, which is pivotally connected with the secondary bracket arm. A compression spring ||0 is provided on each eye bolt |01 below each secondary bracket arm |05. One end of each compression spring l0 presses against the rocker member |09 of the adjacent secondary bracket arm |05, and the other end of said spring ||0 is supported by, washer and nut means on the end portion of the eye bolt |01. By this arrangement, the force of the spring ||0 is exerted to urge the two bracket arms |02 and |05 together and to yieldingly resist separation of said two bracket arms. Thus if an upper roll |0| contacts a slab of wood, the spring |01 may compress and the two arms |02 and |05 may move apart providing a resilient mounting for the rolls |0|. The means for raising and lowering the rolls |0| is connected with the end portions of the secondary bracket arms |05, remote from the pivots |06. This means comprises a link |2, having one end portion connected by a pivot ||3 with each secondary bracket arm |05. The other end portion of each link ||2 is connected by a pivot ||4 with a lever arm ||5 on the transverse shaft 88, on which the adjacent roll 89 is mounted. Obviously oscillating the shaft 88 will tend to raise and lower the upper roll |0| with which it is connected. Two shafts IIB and ||9, Figs. 7, and 12, extending longitudinally of the machine, are provided for raising and lowering the upper rolls |0|. The shaft I8 controls the movement of the upper rolls |0|, associated with the three circular frames 12, 13 and 14 at one side of the station where the work is done on the slab or piece of wood, and the shaft ||9 controls like movement of the rolls |0|, associated with circular frames 15, 16 and 11 at the other side of the work station. Shaft H9, see Fig. 12, is operatively connected with each shaft 88 by a worm 92' meshing with a wormv wheel 9| connected by a key 90' with the shaft 88, whereby shaft 88 may be oscillated. Shaft ||8 is similarly connected with its shafts 88, see Fig. v10. "The driving means for the shaft |8,.see Figs..10 and'll, consists of a sprocket wheel1|20 connected by a link belt |2I with a smaller sprocket wheel |22 on a countershaft |23. A gearwheel |24, on the countershaft |23, meshes with a pinion |25 on the shaft |26 of a reversible motor |21. The driving means for the shaft ||9 consists Vof similar link belt and gear mechanism, not shown, connecting said shaft I I9.with a reversible motor |28.

The control means vfor the motors 85, 95, 96, |21 and |28 is diagrammatically shown in Fig. 14. This control consists of three independent reversing switches, namely, one reversing switch |29 connecting a source of energy |30 with the circuit-wires |30', which control the supply of electric vcurrent to the motor ganother reversing switch |3| connecting the source of energy |30 with the circuit wires |32, which control the supply of electric current to the two motors and 96, and another reversing switch |33 connecting the source of energy |30 with the circuit wires |34, which control the supply of electric current to the two motors |21 and |28.

The routing tool |36 is movable horizontally ori-track |35 and vertically on track |35,` by means not shown, so that therouting tool can move up and down and at right angles to the direction of travel of the log vor timber being worked on.-

Fig. '7 shows 'a transparent shield |38, positioned, between the tool |36 and the location where the operator stands to protect the operator against flying chips.

In connection with a machine of this type for holding andv angularly turning and vlongitudinally positioning slabs or pieces of wood, it has been found desirable to have a plurality of motors connected with the holding and turning means in such a manner that said motors are moved with the holding and turning means. As these parts are turned back and forth at frequent intervals duringfoperation through angles up to at least considerable diiiiculty has been encountered due to breakage of the electrical conductor cables which are connected with the motors. This difficulty has been overcome byproviding, on two of the oscillatory ring members 91, such as the ring members positionediin circular frames 12 and 17 at the ends of the machine, winding drums |40, on which the electric cables |4| are wound. The cables |4| provide a plurality of conductors such as conductors |32 and |34 shown -diagrammatically in Fig. 14. Preferably a separate gro-ove is provided in each winding drum |40, foreach cable used. See Figs. '7 and 8. The cables Mi, preferably conducted from the motors to the winding drums |40 through suitable conduits |42, Fig. '7, are wound one or more turns on the drums and thence pass around sheaves |43, Fig. 9, to which counterweight means |44 is attached, whereby the slack is taken out of the cables. Beyond the sheaves |43, the cables |4| are *clamped or'otherwse secured to any convenient support |45; This arrangement avoids all twisting and all sharp bending of the cables and greatly reducesv cable deterioration;-

Fig. 13 shows alternative means for completing the electrical connections to the motors 95, 96, |21 and |28, which are carried on the angularly movable rings `shown 'in Figs. '7 to 12. This alternative means comprises slip rings |40', carried by the rings in the frames 12 vand ,1 1, lonly one set of sad'slipringsbeing"shown.' Brushes |4|' Vengage with said sliprings to. supply current thereto and the slip rings are connected with the motors by suitable cables, notv shown, which may be disposed in conduits similar to the conduits |42,'shown in Fig. 7. When these slip rings |40 and brushesr I4| are used, they Will be interposed in the conductors |32 and |34, shown diagrammatically in Fig. 14. j

In the operation of the machine disclosed in Figs. '7 to 14 inclusive, the operator standsat the side of the machine and operates the machine by manipulation of the control devices |29, A|3I, and |33. Slabs, or pieces of wood, are supplied Y to one end of the machine by any suitablemeans,

not shown. The operator may raise the top rolls |0| to receive these slabs or pieces of wood, or said slabs or pieces may bey fed into the rolls and raise the top rolls |0| by pressure which compresses the springs i0. The operator advances or retracts the slabs at will by driving the lower rolls 89, vand thereby positionsthe slabs longitudinally with respect to the boring or routing -or bark removing tool. At the same time the operator positions the slabs angularly with respect to the tool by energizing motor 85 and turning they ring membersv19 in either desired direction. When the slab; is properly positioned for removing an undesirable portion thereof, such as a knot, the Yoperator lowers the tool onto said undesirable portion and bores or routs it o ut of the slab. The slabs are firmly held so that they may be worked on throughout their entire length as they pass through the machine and vall the like on a log or piece of wood held in the machine. Each circular housing member |52 and |53 preferably consists of an upper half and a lower vhalf secured together by cap screws |54. Disposed within each of the circular housing members |52 and |53 are three rotatively mounted ring members |55, |56 and |57. The ring members |55 and |56 each have external gears |58 'and internal gears |59, and the ring member |51l1as an external gear |58. The externalv gears ofthe ring members |55, |56 and |57, within each circular housing, mesh with gearwheels |60, I6| and |62 respectively, which are positioned below said ring members. In Fig. 15, the gearwheel |60 is shown bydot and dash lines,

as it would not appear in the sectional portion of that view. The gearwheels |60, |6| and |62 are mounted on shafts |63, |64 and |65 respectively, see Fig. -1'7. These shafts are positioned alongside of each other in the base portion of themachine and extend throughout the length of the machine. 'Ihe shafts |63, |64 and |65 are respectively connected by worm and wormy wheel means |66 with the shafts |67 of motors |68, |69 and |70. The gear ratios of the several worms, worm wheels and gear wheels between the motors |68, |69 and |10 and the respective' rin members |55, |56'and |51 driven by said motors, 1s. such as -to cause said ring members'to all bev rotatedY at the. same speed when all ofthe motors are driven in the same direction andi at the same speed. The several motors |68, |69 and. |10 are electrically connected so thatl whenever the motor |10 is energized, the motors |68 and |69 will be energized therewith and will runv in the same direction and at the same speed. Also', the motors |68 and |69 may be operatedv independently of the motor |10, and the motors |68 and |89 may be operated independently of each other. The electrical connections` to said motors are here-inafter described.

Four transverse shafts |1|, arranged in rectangular formation, extend across each ring member |51, ,and are mounted in brackets l|12', which Iare integra-l with the ring member. Tw-o upper bracket members |113 and two lower bracket members |14 are fulcrumed on the shafts |1|. Twov upper rolls |15 are rotatably mounted in the outer end portions of the upper bracketmembers |13, of each ring member |51, by axle means |16. Two lower rolls |11 :are rotatably mounted in the 4outer end portions of the lower bracket members |14, of each ring member |51, by .axle means |18. Two lever arms |l19 are Xedly connected with the lower'brack-et members |14 of each ring member. Each of two diagonal links has one end connected by pivot means |8|| with the lever arms |19, and the other end connected by pivot means |82 with the upper bracket members |13. These link-s |80 and lever arms |19 thus interconnect oppositely positioned-brackets for angular movement so that the rolls supported thereby will be simultaneously moved equal distances toward each other, or away from each other. This provides for keepingfa log or piece of timber, which is held by said'rrolls, in a substantially -aXial position as respects the ring members |151 and circular housing members |52 and |53. It will be understood that the terms upper and lower, as applied to brackets, rolls and the like in Ithis description, refer to the parts which `are shown uppermost in the drawings, but as this machine is Ia rotary type machine, the position of these parts may be altered 4or even reversed in operation. The means for moving the rolls |15 and 11 comprises two worm wheel segments |83 rigid with the upper bracket members |13. Two worms l|i84 are splined on a shaft |85, l.and mesh with the respective segments |83. One of these worms is a right hand :and the other a left hand thread, whereby rotation of the shaft will move the brackets |13 in opposite angular directions. Angular movement o f brackets |13 will move brackets |14 in opposite angular directions with the result that the two rolls |15 and the two rolls |11 will be moved toward or away from each other. The inner ends of the worms |84 engage with compression springs |86, which press against a fixed collar or flange |81, on the shaft |85,-so that the rolls |15 yand |11 will be resiliently supported. Rotation of the worms |84 in one direction will move the rolls |15 and |11 toward each other while rotation of said worms in a reverse direction will move said two pairs of 'rolls apart. Ii, in moving the rolls |15 and |11 toward each other, the shaft |85 `and worms' |84 continue to rotate after the rolls |15 and |11 engage :a 10g, the worms |84 will be moved toward the collar |81. This' compresses the springs |86, so that. saidv springs will maintain `a resilient pressure on the rolls, and at the same. time will permit the rolls to move toward and away from each ot-her in conforming to irregularities in the size and shape of the log. The shaft` |85 is vdriven by means of a gearwheel |08, which meshes with the internal gear |59 of the ring member |56. When the center ring member |51 is rotatively moved, the ring member |56 may be moved synchronously therewith, -due to the interconnections of the motors |69 and |10, .as diagrammatically shown in Fig. 20, and there will be no rotation of the gearwheel |88. However, by separately energizing the motor |69, the ring member |56 may lbe rotatively moved any desired amount in either direction to `rotate the gearwheel |88.

The means for driving |all of the rolls |15 and |11 comprises :a sprocket wheel |89, vfixedly mounted on each of the axles or shafts |15' and |18; two sprocket wheels |90 and 129|, rotatively mounted on each transverse shaft |1|; and a driving lin-k belt |92 operatively engaging the four sprocket wheels |9|, by passing between the two lowermost sprocket wheels |9| and around ,the louter and upper portions of the two upper sprocket wheels |'9| (as shown at the right in Fig. 15) and over a driving sprocket wheel |93 onk a shaft |94. An endless link 'belt |95 operatively connects each sprocket wheel |89 withV its .corresponding sprocket wheel |90. If the sprocket wheel |93'at the right in Fig. 15 is driven in a clockwise direction, then the' several sprocket wheels :an-d rolls will all be rotated in the directions indicated by the arrows. If a log is held between the rolls |15 and |11, when 'the rolls |15 and |11 are thus rotated, said log will be moved from right to left. If the sprocket wheel |93 is rotated counterclockwise, the log will be moved from left :to right. The shaft |194 is journaled in bearing means |95', which is carried by the ring member |51, andthe driving means for said shaft |94 comprises bevel gears |94 conecting' said shaft |94 with a shaft |96, which is positioned a-t right `angles to shaft |94 and journaled in bearings |91 connected wilththe ring mem-ber |51. A

gearwheel |98, on shaft |96, meshes with the internal gear |59 of ring member |55. By operating motor |68, the ring member |515 may be rotated .and 'the gearwheel |98 Idriven to thereby drive the shaft |94, which drives' the rolls |15 :and |111'.

In the operation of the machine shown in Figs. 15 to 20, the round logs are introduced in' any suitable way between the rolls |15 and |11, and the ringmembers |51 are rot-ated so as to axially rotate these logs as said logs are being advanced. A tool or rotary cutter' head is positioned between the .two frame' portions |52 and |53 to work on these logs and remove bark, knots and the like therefrom. As the round log-s are advanced'and axially rotated under the control of the operator, the cutterhead operates in a spiral path on the log lto remove th-e bark therefrom.

A bark removing driven tool may be used in connection with the machine shown in Figs. 15 to 20. One bark removing tool, suitable for this purpose, is shown in a general way, for purpose of illustration, in Figs. 18 and 19, but it will be understood that other types of bark removing tools and also boring and routing tools may be used with the machine shown in Figs. 15 to v20. The bark removing tool-shown in Figs. 18 and 19 comprises a concave type rotary cutter head 200 mounted in a bracket 28|. The cutter khead 200 is connected with a motor 202, by which it is driven. Thel motor 292 is secured to the bracket 20| andis movable therewith, The bracket 20| is pivotally connected with a frame member 293, preferably by circular track means 294 and by a vertical shaft 205. The frame member 203 is slidably mounted for vertical movement on an upright support 206, by means of vertical track devices 201. Hydraulic lift means 208 is provided for ventically adjusting the frame'member 203, and preferably a counterweight 209 is connected with the frame member 203, by cable means 2|0 passing over sheaves 2| l. A lever arm 2|2 is secured to the upper end portion of the shaft 205. A nut 2|3 is pivotally supported in the outer end portion of the lever arm 2|2, and a :threaded shaft 2|4, which is connected by universal joint means 2|4 with motor 215, is threaded through the nut 2 I 3.

The slewing motor 2|5 is mounted on the bracket 203 so that it moves up and down there' with. Operation of the motor 2|5 will angularly position the cutter head 200. The cutter head 200 is of concave shape, being larger atthe ends and smaller at the center. When this cutter head is positioned with itsy axis at right angles Ito the axis of a round log, it may be used efficiently to bark a log having a circumferential curvature which conforms to the longitudinal curvature of the cutter head 200. If the concavecutter head 200 is positioned with its axis at an angle to the axis of a log, rthen said cutter head will conform to the curvature of a log' which has a circumferential curvature less than the cutter head to substantially conform to logs of different diameters. Vertical movement of the cutter head is controlled by the hydraulic means 208.

Due to the mechanical connections through the ring members |55, |56 and |51, if the motor |10 (for turning the log) is rotated while motors |68 and |69 remain either stationary, run in the same direction but at a different speed, or are run in a reverse direction, then the rolls |15 and |11 will be moved toward or away from each other, and also the rolls will be driven in one direction or the other. Therefore, if motor |10 is rotated in either direction and it is desired that there shall be no rotation of ormovement toward and away from each other of the rolls |15 and |11, then the motors |68 and |69 must rotate in the same direction and at the same speed as motor |10. Also if motor |10 is rotated'in either direction and it is desired that there should be rotation of, or movement toward and away from each other of the rolls |15 and |11, then there must be a difference in the relative speed or direction of rotation of the motors |68 and |69 as respects :the motor |10. Also it may be desired to rotate the rolls |15 and |11 without any other movement, or it may be desired tosimilarly move the rolls toward and away from each other. It is, therefore, necessary to have controls so 'that if the motor |10 is rotated in either direction the motors |68 and |69 will normally rotate in the same direction and at the same speed. It is also necessary to have controls which will permit motors |68 or |69 essary to have controls which will permit the motors 68 or |69 to run independently of each other at different speeds or in different directions, and also to'run independently of the motor |10 regardless of'whether or not said motor |10 is running. The various controls necessary n for accomplishing these purposes are illustrated in Fig. 20 of the drawings.

The ring |51 supports the feed rolls |15 and |11 and upon rotation of said ring |51 the log or timber supported by said feed rolls is rotated. The motor |10 driving said ring |51 is reversible so that the ring |51 and the log between the feed rolls |15 and |11 maybe angularly moved in either direction. As the ring |56, lfor moving the feed'rolls |15 'and |11 toward or away from each other, and the ring |55 for providing rotary movement to the feed rolls 15 and |11 and rlongitudinal movement to a log (therebetween, drive throughgearing means which rotate with the ring |51, any differential in the angular rotation of the ring |55, as respects the ring |51, will provide rotary movement to the rolls |15 and |11 and longitudinal movement tothe timber between said feed rolls, and any differential in the angular rotation of the ring |56,- as respects the ring |51, will move the feed rolls |15 and |11 towards or away from each other; ,Thus I have provided a plurality of rotatively mounted rings |55, |56 and |51; feeding rolls |15 and |11 supported by thering |51; roll driving means which are connected with rthe ring |55 and any differential in the relative angular movement between rings |51 and |55 will cause the feed rolls |15 and |11 to be rotated and provide longitudinal movement in one direction or the other to a piece of timber between the feed rolls.

By'way of summary, rthe means for moving the feed rolls |15 and 11 toward and away from each other comprises (see Fig. 17): motor |69,v shaft |61 connected with said motor |69, worm and worm wheel means |66 on said shaft |61, shaft |64 (see Fig. 16), gear wheel |6| (see Fig.

15), external gear |58 of ring member |56, ring member |56, internal gear |59 of ring member |56, gear wheel |88, shaft mounting gear Wheel |88, worms |84 splined on shaft |85, worm wheel segments |83v carried `by upper brackets |13, and brackets |13 pivoted on shafts |1|. The outer ends of upper brackets |13 mount feed rolls |15, and such upper feed rolls |15 move toward and away fromlower feed rolls |11 upon angular movement of the upper brackets |13 about the shafts |1|. Diagonal links |80 are pivf oted by pivot means |82 to upper brackets |13 and bypivot means |8| to lever arms |19. Lever arms |19 are rigid with lower brackets |14. Lower brackets |14 are pivoted on shafts |1I. Thus lower brackets |14 angularly move with vupper brackets |13 and the feed rolls |11 mounted on the` outer end of lower brackets |14 move toward and away from upper feed rolls |15 upon angular movement of said lower brackets |14. As the drive means for moving the feed rolls 15 and |11 toward and away from each other includes the gearv wheel |88, supported by ring |51, and the internal gear 59 carried vby the ring member |56, it is manifest that any relative movement between the rings |51 and |56 will cause relative movement between the internal gear |59 of the ring member |56 and the gear wheel `|83 supported by the ring member |51. Any such relative movement between said internal gear |59 and said gear wheel |88 will move the feed rolls |15 and |11 toward or away from each other.

As previously stated, the motors |68, |69 and |10 may be operated independently of each other, each run in either direction, and run at different speeds in either direction, all by means of controls described in connection with Fig. 20. These m0- tors |68, |69 and |10 respectively drive rings |55, |56 and |51 and thus permit synchronous movement of said rings |55, |56 and |51 or relative angular movement between said rings. Ring |51 supports feed rolls |15 and |11 andthus angular movement in either direction of said ring |51, by operation of motor |10, will cause similar angular movement to the feed rolls |15 and |11 and to a log supported thereby.

The means for rotating the feed rolls |15 and |11 in either direction and in turn advancing or retracting logs through the device comprises (see Fig. 17): motor |68, shaft |61 connected with said motor |68, worm and worm wheel means |66 on said shaft |61, shaft |63, gear wheel |60 on said shaft |63 (see Fig. 15), eX- ternal gear |58 of ring member |55, ring member |55, internal gear |59 of ring member |55, gear wheel |98 on shaft |96 (see also Fig. 16), shaft |96, bevel gears |94', shaft |94, sprocket wheel |93 on shaft |94 (see Fig. 15), link belt |92, sprocket wheels I9| rigid on shafts |1|, sprocket wheels |96 also rigid on shafts |1|, link belts |95, sprocket wheels |89 fixed on shafts |16 and |18, shafts |16 and |18, andv thence to feed rolls |15 and |11 fixed on said shafts |16 and |18. As the gear wheel |98 is mounted for movement with the ring member |51 and such gear wheel |93 meshes with internal gear |59 of the ring member |55, it is manifest that any relative movement between the ring |51 and the ring |55 will provide for rotating the gear wheel |93 and rotate the feed rolls |15 and |11 and thus advance or retract a log through the de- 40 vice.

Referring to Fig. 20 of the drawings, the motor |10 controls the turning of the log. The motor |68 controls the rotation of the rolls |15 and |11 and controls the advancing or retarding .45 of the log through the mechanism. Motor |69 controls the movement of the rolls |15 and |11 toward and away from each other. The motor 2|5 is the slewing motor or the motor for angularly moving the barker or cutter head 200. The

50 last mentioned motor 215 has been discussed in connection with Figs. 18 and 19 and is subject to independent control, as hereinafter set forth.

Referring to Fig. 20 the motors |68, |69, |10 and 2|5 are illustrated as three phase motors.

55 The control circuit for operating the various remote controlled or solenoid controlled switches is a single phase circuit. Obviously such type of energy is merely illustrative and is' not a limitation upon the invention. 4 y

The lever 220 is supported for angular movement in planes at right angles to each other on ball and socket means 22|. Movement in one of said planes will cause a link 222, which is connected with the lower end portion of the lever 220, to move up and down and movement in the other plane will cause link 223 to move up and down. The links 222 and 223 are operatively connected with valve mechanism (not shown) to control fluid under pressure to hydraulic cylinders, such as cylinders 64 and 61 of Fig. 4 or cylinder 208 of Fig. 19, or |36 of Fig. 8. Thus a tool, such as 62 of Fig. 4, may be moved up and down as respects a log or moved transversely as respects a log.

Spring loaded plungers 224 and 225 may be depressedv to move switch bars 226 .and 221 from the normal position shown in Fig. 20 downwardly into electrical connection with the contacts therebelow.

When the plunger 225 is depressed, energy will start in the control circuit from e, one side thereof, and pass successively along switch bar 221, conductor 228, switch bar 226, conductor 229, conductor 230, through the solenoid 23| and thence to the other side of the control circuit. Upon energizing of solenoid 23| the solenoid controlled switch 232 will be closed, establishing electrical connection between the motor |10 and its source of energy representedby conductors xyz. The motor |16 will run in a forward direction upon the depressing of plunger 225 and will continue to run as long as said plunger is depressed. Energy on conductor 230 also passes successively along conductor 233, conductor 234, through solenoid 235 tox, the other side of the control circuit, and likewise passes from the conductor 233 along conductor 234', through solenoid 235 to the other side of the control circuit. Upon the energizing of solenoid 235 the switch blades 236 and 239 will be moved to closed position. Energy in the control circuit will then start from e, one side thereof, and pass through blade 236 and' pass successively along conductor 246, switch blade 24|, conductor 242, conductor 263, through solenoid 244, and thence to the vother side ofthe control circuit. Upon the energizing of solenoid 2124 solenoid control switch 245 will be closed, establishing connection between conductors 246 to the low speed windings of the motor |68. The closing of switch 245 will cause motor |66 to operate at low speed and in a forward direction or in a reverse direction, depending upon whether solenoid controlled switch 241 or 2-48'is closed. The energizing of solenoid 235 causes motor |66 to operate in a forward direction through a circuit next described.

Alt the same time energy from c, one side of the control circuit, passes successively along blade 239, conductor 229, blade 250 (which is normally closed), conductor 25|, conductor 252, through solenoid 253 to x, the other side of the control circuit. Upon energizing of solenoid 253 solenoid controlled switch 246 is closed, establishing electrical connection between a source of energy :cya and the conductors 246. Closing'of the solenoid controlled switch 246 will cause the source of energy xyz to be connected with conductors 246 so that the phase rotation is such that motor |66 will rotate in a forward direction, Thus, upon depressing of the plunger 225 the motor |10 was rotated in a forward direction and at the same time the motor |68, by closing of solenoid controlled switches 248 and 245, likewise rotated in a forward direction and at its low speed, which is the same angular velocity as the forward speed of the motor |16.

Upon depressing of plunger 224, energy from z, one side of the control circuit, will pass successively along theswitch blade 226, conductor 251, switch blade 221, conductor 256, conductor 259, through solenoid 260, and thence to 11:, the other side of the control circuit. Energizing of solenoid 260 willclose solenoid controlled switch 26|, establishing electrical connection between the source of energy .rg/e and the motor |10. The phase rotation will be such that motor |10 will rotate in a reverse direction. Energy along conductor 259 will also pass successively along conductor 262, conductor 263, through solenoid 264 and thence to m, the other side of the control circuit. Energizing of solenoid 264 will move the switch blades 265 and 266 into electrically closed position. Energy will then start from'z, one side of the control circuit, and pass successively along blade 265, conductor 261, along blade 24|, conductor 242, conductor 243, through solenoid 244, and thence to 3:, the other side of the control circuit. Energizing of solenoid 244 will close solenoid controlled switch 245 and establish electrical connection between conductors 246 and the low speed winding of motor |68. At the same time energizing of solenoid 264 will establish an electrical circuit where energy from e, one side of the control circuit, will pass successively along blade 266, conductor 268, along blade 256 (which is closed as solenoid 255 is not energized) along conductor 269, through solenoid 210 and thence to .'r, the other side of the control circuit. Energizing of the solenoid 210 will close the solenoid controlled switch 241 and establish electrical connection between the source of energy xyz and the conductors 246 so that the phase rotation is such that the motor |68 will rotate in a reverse direction. In` view of the fact that solenoid controlled switch 245 .is also closed, the motor |68 will rotate in a reverse direction at low speed upon the rotation of motor |10 in a reverse direction. As previously explained, the low speed of the motor |68 will be the same as the speed of rotation of motor |10.

Whenever energy is passing along conductor 269 to close the solenoid controlled switch 241 to rotate motor |68 in a reverse direction, energy will also pass from said conductor 269 along conductor 21| through solenoid 212 and thence to the other side of the control circuit.

In view of the fact that the electrical connections between conductors 233 and 262 and each of motors |68 and |69 is identical, the parts of the electric circuit to motor |69 are given primed numbers corresponding to the nonprimed numbers of the connections to motor |68, and as the description will be identical (except for such primed numbers) to that just described for motor |68 in the interest of brevity it is not repeated.

Thus, whenever motor |10 is operated in a forward direction, connections are established to normally rotate motors |68 and |69 in a forward direction and at slow speed, which will be the same speed of rotation as that of motor |10. Likewise, whenever motor |10 is operated in a reverse direction, electrical connections will be established which will normally rotate motors |68 and |69 in a reverse direction and at slow speed, which will be the same speed of rotation as that of 10.

Whenever energy is passing along conductors 3| I, 3|2 and 269 to energize solenoid 210, energy from conductor 269 will pass along conductor 21|, through solenoid 212 to rc, the other side of the control circuit. Energizing of solenoid 212 will move switch blade 250 into open circuit position, thus interrupting energy from e, along blade 239, conductor 249b1ade 250, conductor 25|, conductor 252, through solenoid 253 to the other side of the control circuit, any time energy is passing along conductor 269 to energize the reverse solenoid 210. This connection to interrupt .the circuit to the forward solenoid 253 any time energy is passing along conductor 269 to the reverse solenoid 210 is necessary, as hereinafter explained, in connection with the 'operation of controllers 213 and 214 so that the normal connection between motors v| 10 and |68 and |69 may be interrupted and motors |68 and |69 operated independent of motor |10.

Whenever energy is passing along conductors 304 and 252 to energize solenoid 253, energy will pass along conductor 25|, along conductor 254, through solenoid 255 to x, the other side of the control circuit. Energizing of solenoid 255 will move switch blade 256 into open circuit position, thus interrupting energy from z, along blade 266, conductor 268, blade 256, conductor 269, through reverse solenoid 210 to zc, the` other side of the control circuit, any time energy is passing along conductor 252 to energize the forward solenoid 253. This connection to interrupt the circuit to the reverse solenoid 210 any time energy is passing along conductor 2,52 to the forward solenoid 253 is necessary, as hereinafter explained, in connection with the operation of controllers 213 and 214 so that the normal connection between motors |10 and |68 and |69 may be interrupted and motors |68 and |69 operated independent of motor |10.

Again, in the interest of brevity, as the circuit means to motors |68 and 69 are identical, the solenoids, in the circuits to motor |69 are given prime numbers, viz., 255 and 212 and the conductors and switch blades are similarly given primed numbers.

The lever 215 has a hub 216 ywhich is mounted on a pivot shaft 211, journaled in a frame 218. The frame 218 supports a plate 219 formed of insulating material, which plate serves to support the contact members hereinafter described. The contactor 280 is connected with the hub 216 and angularly moves with the lever 215 when the hub 216 is angularly moved as respects the axis of the shaft 211. When such movement of the lever 215 occurs the frame member 218 4 and plate 219 do not move with the lever, but

the contactor 280 moves over the plate 219.

The frame 218 is pivoted on shaft means 28|, which is positioned at right angles to the shaft 211 and journaled in a xed frame 282. A contactor member 283 is fixed with a shaft means 28| so that as the lever'215 is angularly moved, in a plane at right angles to the before mentioned movement, contactor 283 will move therewith. The fixed frame 282 supports a plate 284 of insulating material which is similar to the plate 219 and has contact members, as hereinafter described, and is positioned and supported so that the contactor 283 moves over it when lzesv'er 215 is angularly moved on the axis of shaft The plate 219 isr provided with a plurality of contact means thereon which are'brushed or contacted by the contactor 280. The contact 285 is a forward contact and the contact 286 is the reverse contact. Inter-connected contacts 281 are the high speed contacts of the motor |69 and interconnected contacts 288 .are the low speed contacts of the motor 69. If theKlever 215 is moved so that the contactor 280 establishes connection with contacts 288 and 265, a control circuit will be established commencing with e, one side of the control circuit, to contactor 280, to contact 288 along conductor 289, along conductor 243', through solenoid 244 to the other side of the control circuit, thus closing solenoid controlled switch 245', thus establishing electrical connection between the conductors 246 with the lo-w speed winding of the motor |69. At the same time another circuit will be energized commencing fwith fone side of :the controlcircuit, to contactor 280,1to contact 285,-along.conductorf290,

along conductor 252', through solenoid 253 lto x,

vthe'other side of the control circuit. Energizing of solenoid253 closes solenoid controlled switch 248 and establishes a phase rotation between the source of ,energy xyz and the conductors 246 so that the motor |69 will run in a forward direction. We have thus closed switches 226 andllfl5' so that the motor |69 will operate in a forward direction and at low speed.

If'the contactor 260 is moved into electrical contact with-*a contact 281, the just mentioned circuit closing solenoid controlled switch 2123 will be maintained and the circuit to solenoid controlled switch 245' will be interrupted and a high speed circuit will be established commencing with e, one side of the control circuit, to contactor 280, to contact 281, along conductor 29| through solenoid 202 to the other side of the -control circuit.

Energizing of solenoid 292 will move blade 22| into open circuit position and move blade 293 into closed circuit relation. As blade 293 moves l `into closed circuit relation a circuit will be established-commencing with e', one side of Athe control circuit, along blade 293, conductor 294, through solenoid 295 to x, the other side of the rcontrol circuit. Upon the energizing of solenoid '295 solenoid controlled switch 265 is closed,'es

tablishing connection between the conductors 246 and the high speed windings of the motor |69. In View of the fact thatvswitch 243 is already closed, connection will be established between-the source rye and the motor |69 in a forward direction and with the high speed wind- `ings of said motor |50.

In View of the fact that the controller 214 is 'to control the operation of motori 69, irrespective of any normal connections which may be established uponthe operation of motor |10, the conductor is connected withconductor 260 .and energy flows alongconductor 25 along conductor 254', through solenoid 255 to the vother side of the control circuit, thus moving 'blade 256 to open circuit'positionwhenever en- -ergy is flowing along conductor 260.

Opening of blade .255 ywill interrupt a reverse connection v'which is started in the event of operation of v235' and conductor 261 and thence along blade 2l||,etc.,ris interruptedby'the -opening of blade `If the contactor 280 is moved in the other direction and establishes contact with contacts 238 and -2855theflow speed connection previously described in connection with Contact 222 will be established and'the Solenoid controlled switch :245' closed. Also energy will now from one .Iside of the control circuit, to contactor 280, to

contact 266, yalongconductor 261, conductor'Zilti, conductor-526.3', through solenoid '21s to 9;, the

other side of the control circuit. Energizing of solenoid 213 will close solenoid controlled switch 241 and establish connection between the energy rye and 4the conductors 246 so that the phase rotation is such'that the motor |60 will operate vlow speed reverse.

Whenever energy is flowing along the conductors 291 and 298, energy `will likewise .flow t5 along conductor 21| through'the solenoid 212 to at, theother side of the control circuit,l moving blade 250' into open circuit position,'interrupt ing a forward circuit which would be established upon the energizing of solenoid 235', as previously 1,0 explained.

If the contactor 2861s moved into contact with contacts 281 and 266, as previously explained, by energizing contact v281, the high speed solenoid controlled switch 296 is closed and also the re- ,--l5 verse solenoidjcontrolled switch 241' `is closed, thus establishing connection between the source xyz and'thehigh speed windings ofthe motor l'Q-so thatthefmotor |69 operates at high speed in alreverse direction. As previously explainedUZO energizing of the high speed contact 261 and conductor'29l will move switch Yblade 20| to an open circuit positiontointerrupt any low 4,speed connection which Amay have been established by reason of the `operation of solenoid 264. or 2352,25

The plate2tlllis provided with a pluralityof contact means thereon 4which are brushed or contacted by the contactor 283. The contact 299 is a forward contactfand thecontact 300 is thereverse contact. Interconnected contacts 430| `are the high speed contacts of the motor |68 and interconnect-ed contacts -302 are the low speed contacts of the motor |63. `Ii vthe lever 215 is moved so that the contactor 233 `establishes connection with contacts 302 and 209, Va controlf circuit will be established commencing with z, one side `ofthe control circuit,-to contactor 283 to contact 302 along conductor 30,3, along conductor M3, through solenoid 2154 to zc, the other side ofthe control circuit, .thus closing solenoid'gm control 'switch 205 and establishing electrical connectionibetween theconductors 246 Ywith the low speed Winding of the motor |68. At the same time yanother circuit will be established commencing-with e, one side of the control circuit, ,145 to contactor 283, to contact 209, along vconductor .304, along conductor 252, through solenoid :253

to x, the other side of the control circuit. `Energizing of solenoid253 lcloses solenoid controlled switch 248 and establishes a phase rotation be- L tween the source of energy xyz and the conductors 246 so lthat the motor |68 will run in a forward direction. We have thus closed switches 248 and 245 so that the motor |68 will operate in a forward direction and at low speed. 1 55 4If lthe contactor 283 is moved into electrical 4contact with a contact 30|, the just mentioned be established commencing with z, one side of V70 the control circuit, along blade 301, conductor 308, through solenoid '300 to at, the otherside of Vthe control circuit. Upon the energizing of 'solenoid 1309 solenoid controlswitch 3|0 is closed,

establishing `connection `between the conductors f75 1246 and the high speed windings of the motor |68. In view of the fact that switch 248 is alforward direction and with the high speed windings of said motor |68.

In View of the fact that the controller 213 is to control the operation of motor |68, irrespective of any normal connections which may be established upon the operation of motor |10, `the conductor 25| is connected with conductor 304 and energy ows along conductor 25|, valong conductor 254, through solenoid 255 to .'c, the other side of the control circuit, thus moving blade 256 to open circuit position whenever energy is flowing along conductor 304.V Opening of blade 256 will interrupt a reverse connection which is started by reason ofthe operation of motor |10 if a forward connection has been established by the controller 213. Also whenever the high speed connection is established and the solenoid 306 is energized in addition to moving the blade 301 into closed circuit position, the blade 24| is moved into open circuitposition-thus the low speed connection which was established when solenoid 235 or 264 was energized through blade 23B and conductor 239 or blade 265' and'conductor 261 and thence along blade 24|, etc; is interrupted by the opening of blade 24|.

If the contacter 283 is moved in the other direction and establishes contact with contacts 302 vand 300, the low speed connection previously deductor 269,4 through solenoid 210 to a, the other j side of the control circuit. Energizing of solenoid 210 will close solenoid controlled switch 241 and establish connection between the energy xyz andthe conductor 246 so that the phase rotation is such that the motor |68 will operate in a reverse direction. In view of the fact that switch 245 is closed, the motor will operate at low speed reverse. 1

Whenever energy is flowing along the conductors 3|| and 3I2, energy will likewise ow along conductor 21| through the solenoid 212 to .'c, the other side of the control circuit, moving blade 250 into open circuit position, interrupting a forward circuit which would be `established upon the energizing of solenoid 235, as previous- 1y explained.

.is carried by the lever 215. -prises two spring loaded If the contactor 283 is moved into contact with contacts 30| and 300, as previously eX- plained, by energizing vcontact 30|, the high speed solenoid controlled switch 3| 0 is closed and also the reverse solenoid controlled switch 241 is closed, thus establishing connection between the source :c1/z and the high spe-ed windings vof the motor |68 so that the motor |68 i operates at high speed in a reverse direction. As

previously explained, energy along the high speed contact 30| and conductor 305 will move switch blade 24| to an open circuit position to interrupt any low speed connection which may have been established by reason of the operation of solenoid 264 or 235.

Electrical control means for theslewing motor 2|5 on the tool which works on the log or slab` is provided within a switch housing 3|3 which This control comsWitch operating plungers 3|4 and 3|5 of push buttonl type retained in engagement with predetermined contact members by the spring loaded plungers 3|4 and 3|5. Depression of these plungers will close;

circuits as hereinafter set forth.

When the plunger 3|4 is depressed, energy will start from z, one side of the control circuit, and pass successively along switchbar 3| 1, conductor 3|9, switch bar 3|0, conductor 320 andl through solenoid 32| to 0:, the other side of the control circuit. Upon energizing of solenoid 32| a solenoid controlled switch 322 will be closed, establishing electrical connection between the motor 2|5 and a source of energy represented by conductors xyz. The motor 2|5 will run in one direction upon the depressing of plunger 3|4 and will continue to run in this same direction as long as said plunger 3|4 is held in a depressed position. When plunger 3 5 is depressed energy from c, one side of the control circuit, will pass successively along' switch bar 3|8, conductor 323, switch bar 311, conductor 324, and through solenoid 325 to x, the other side of the control circuit. The energizing of solenoid 325 will close a solenoid controlled switch 326 and establish electrical connection between motor 2|5 and source of energy represented by conductorsV Xyz in a phase relation to cause the motor 2|5 to run in a reverse direction as long as plunger 3|4 is maintained in a depressed position. Depression of both of the plungers 3|4 and 3|5 at the same time ywill obviously fail to close any of the control circuits. v

The motor |68 which drives the rolls |15 and |11 and the motor |69 for moving said rolls toward and away from each other are both operable at high or low speed in each direction and the motor |10 for turning the log is a reversible motor having the same speed of rotation as the low speeds of the motors |68 and |69. Two speeds are desirable in the motors |68 and |59 so that if a log is to be turned by operating the motor |10 to turn the medial ring |51 in either direction, either or both of the motors |68 and |69 may be simultaneously operated in the same direction as the motor |10 to turn either or both of the rings |55 and |56 in the same direction as the medial ring |51 but at a faster speed. Conversely, reversing either or both of the motors 68 and |69 while the motor |10 continues to run will produce relative rotary movement between- The drawings illustrate separate windings in motors |68 and |69 to provide motors with a high speed and a low speed. Such construction is merely illustrative of multiple speed motors and other Well known forms of motors to accomplish such purpose may be obviously used.

In the'operation of the controls just explained in connection with Fig. 20, the operator stands so that the cutting tool, as 200 vin Fig. 19 or |36'in Fig. 8, is readily visible. One hand grasps the handle portion 3|6 of the lever 215 and the other hand grasps a sirnila11 handle portion of a lever 220. be free to depress plunger members 224 or 225 with one thumb or to depress plunger 3|4 or 3|5 with the other thumb. By moving the lever 220 angularly'in different planes the operator may The respective thumbs of the operator will j .controlthefpositionof the toolnsuchfaslzljn u Fig.,19,or'|36 inFig.f8. By Athe;thumb;-hefmay depress 4either plunger ,224 or v=225 nto voperate motor |10 inav forward orina-reverse;direction. f5 Operation ofmotorl throughthe control/cir- .cuit-y described will 'provide electrical connections which will normally cause motors |68 and |69 to, also operate and at thel same speedfand inthe .same direction VVas motor |10. With'hs other yhand the operator may angularlyn move therlever 215 in two planes to vcause either-motor|68 or |69 to` operate at the desired speedv andin the desired direction, regardless of the operation'of .motor |10.' The operator mayalso, -with--the other thumb, depress either plunger 3|4 ora'3 |'5 to cause operation of the slewingmotor g2l5in-the desired direction. In actual practice; ithasbeen yfound that the operators soon become accustomed to the controls hereinbefore described, and the piece of wood in the 'device and thecutting tool can beso synchronized that .theoperlator can remove a defect fromv a log Awithzanf-absolute minimurnremoval of wood. Theexibil- `ity of control is welldemonstratedz-by the'fact that even unskilledroperators are able'to-'carve their vinitials or like configurations in .afpiece ofwood.

-In the foregoing illustrations cf thisV invention each embodiment illustrates a. plurality of spaced apart; ring members, such as ringv membersf24- in Figs. 1 to.6,ring members '19 inFigs; 71to14, and ring members |55, |56 and |51 in Figs..1'5,to'20. Meansare provided so that these said ringswill -loe rotated' together inthe same direction and at the same speed. The ring members carry feeding rolls, such-as rolls 33 and '44 ofFigs. l to 6, rolls-,89 and ||l| of FigsQlto 14, and;rolls |15 and-|11 of Figs. 15 to'i20. 'The'feedingrolls of 'Figs 1 to 14 'provide for relative movementof 40 the 4rolls toward and away from each rother `where all of the movement is taken' by one roll yof each pair. In Figs. 15 to 20 thisxmovement ofthe rolls toward and awayfrom each-other is provided sothat all of the rollsmove and-aflog may be maintained in axial alignment with'the v Vrings |55, |56 and |51. i

:The rolls for supporting'the timber are vsynchronized in their movements to vforma common `support for a log, so 'that the logmay be advanced or retarded as desired. The rings are synchronized to turn together so thata timber supportedby the rolls may be turned to present the desired portion thereof to a tool.

yIn each embodiment a work station is provided betweenspaced apart rings1which is clear from theoperating parts so'that all portions of the timber may be presentedto a cutting tool throughout the full turning cycle of the timber. In the various embodiments of this invention la 6o variety of cutting tools have been illustrated, such asv the drill 5i] shown in Figspl and 2, the cutter 62 shown in Fig. Il, the barkinghead 63 lshown in Fig.`5, the drill or router |36 shown in'FigJ', and the cutter :Zllshown in Figs. 18 and 19. 65-These various tools may be used on leach embodiment of the invention and in i the interestlem ofdriving the rolls and .-moving .the samel 75.' toward and awayy from each other has beenillusby Vthe rotating ring y members.

Itool.

toward 4and away from each other is accomplishedby electric motorsgl2'lfand |28. In view of the factthat such motors pare `carried by rotating ring members the vexternal :source of electrical energygis-connected with such motor throughthe cable ldlfaszshown in Fig.v 9, or through the slip rings-andbrushes |40' and IM', shown in Fig. 13.

Also thegelectric motors gand 96v for driving the yrolls- Stima forward ora reverse direction. toadvance or retard the-.timber,;are likewise carried connectingzsuch motors 95 Aand 96 with an external source:` of :electrical fenergyi is through .the same electrical cablesldl, shown inv Fig. 9, or the slip rings-and brushes shown inFig. 13. In Figs.

15 to ,.20 inclusive the. electric motors are all stat vtionary motors and ,through` the shafts and gears shownthe rolls are movedtoward and away from each other bythe motor |69 and rotated by mo- /tor |68. rIhroughthe electrical circuit illustrated vin'Fig- .20 controlof the motor |10 for turning the rings andmotors IGS/and |68 may be properly controlled.

'To Aprovidezproper manipulation of the vconttrols` for therring members, the feedrollsand'the cutting tool, levermembersZZ and 215 have been shown4 in Fig. 20. These lever members permit the operator, by wrist and-thumb movement,-to

properly coordinatethe operation: ofyarious movzingzrpartsroftheinvention. Iny other words, variQus cutting devices have been illustrated and rmechanical -means .are employed to present the ..desiredportonof aspieceof woo'd'to the cutting tool.

Theleverrcontrolfmeans are such that the operator may fatwill present. any desired portion -of-theilogzand,manipulate the cutting tool to 4,ellgage such :desired portion.4 of. the log.

.FAlsoin theivariousfembediments of this invenition-means-areprovidedfsofthat the timber may fbe :supported :and presented vthroughout its entire length for propergengagement with a cutting In :other words, :the timber vneed not be supported by:rolls'onboth sides ofthe work sta- -tion and it vmaybesupported oneither side there- JO. i

'Obviously-changes. maybema'de in the forms, 1.5 dimensions vandarrangement of-the'parts of this invention, without departing from-the principle thereof, 'the-above setting-forth only preferred forms-of embodiment.

I` claim: i 1. A (device of uthe A class described, comprising frame means; a,pl11nality of axiallyaligned spaced apart ring members rotatably supported .by Said frame means; swinging arms pivotally supported Vby leach 4of ,said ,ring.members; rolls rotatably mounted in the outer vend portions of said arms and positioned to receive'therebetween a niece ofy timberwhichis'tobemoved rotatively with the Avrin-gvlariembers Vandilongitudinally within the ring members; link Vmeans interconnecting swinging'v .armswhifch are .positioned-on opposite'sides of Athe-path of;'movemento'f2 the-piece'of timber compelling synchronousrnovementof said `intercon- -nected arms .toward :and away from each other; :arm moving means'connected with .i said arms;

The means forf 

